The MIPI I3C host interface is an evolutionary standard that improves upon the features of I2C, while maintaining backward compatibility. This standard offers a flexible multi-drop interface between the host processor and peripheral sensors to support the growing usage of sensors in embedded systems.
The Arasan I3C Host Controller IP implements Host Controller functionality as defined by the MIPI Alliance’s I3C Specification. The I3C bus is used for various sensors in the mobile/automotive system where the Host Controller transfers data and control between itself and various sensor devices. The I3C Host Controller implements support for legacy I2C Device Controllers, Clock frequency scaling, Open-drain and Push-pull operation of I3C Interface, and Dynamic Addressing support.
Arasan has participated in multiple MIPI I3C Interop Workshops to ensure compliance of its I3C Host IP, I3C Device IP, I3C Software and HDK
Block Diagram
Features
• Compliant with MIPI I3C Specification v1.1.1 • Compliant with MIPI I3C HCI Specification v1.1 • Supports up to 12.5 MHz operation using Push-Pull • Supported features,
Open-Drain and Push-pull type transactions (as required)
Supports legacy I2C devices
Dynamic addressing while supporting Static addressing for Legacy I2C devices
Legacy I2C messaging
I2C-like Single Data Rate messaging (SDR)
High Data Rate messaging modes (HDR-DDR mode)
Reception of In-band Interrupt support from the I3C Device Controllers
Reception of Hot-Join from newly added I3C Device Controllers
Support for Target reset
Support for group addressing
AHB Target Interface for Configuring/Controlling the IP with Interrupt output
AHB Interface for Host Controller DMA access
Support for up-to Eight rings in DMA mode and configurable as per the application requirement
Support for JESD403-1 Sideband Interface
Configurable FIFO sizes for PIO, DMA, Command, Response, and IBI Queue. Common FIFOs are used for both PIO and DMA mo
Deliverables
• RMM compliant synthesizable RTL design in Verilog • Easy-to-use test environment • Synthesis scripts • Technical documents • Validated with 3rd Party UVM-based Device Controller VIP and available as an additional option
